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import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

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Roy Tam 2018-01-19 03:59:58 +08:00
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gfx/layers/apz/test/mochitest/helper_scrollto_tap.html Normal file
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<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width; initial-scale=1.0">
<title>Sanity touch-tapping test</title>
<script type="application/javascript" src="apz_test_native_event_utils.js"></script>
<script type="application/javascript" src="apz_test_utils.js"></script>
<script type="application/javascript" src="/tests/SimpleTest/paint_listener.js"></script>
<script type="application/javascript">
function startTest() {
if (window.scrollY == 0) {
// the scrollframe is not yet marked as APZ-scrollable. Mark it so and
// start over.
window.scrollTo(0, 1);
waitForApzFlushedRepaints(startTest);
return;
}
// This is a scroll by 20px that should use paint-skipping if possible.
// If paint-skipping is enabled, this should not trigger a paint, but go
// directly to the compositor using an empty transaction. We check for this
// by ensuring the document element did not get painted.
var utils = window.opener.SpecialPowers.getDOMWindowUtils(window);
var elem = document.documentElement;
var skipping = location.search == '?true';
utils.checkAndClearPaintedState(elem);
window.scrollTo(0, 20);
waitForAllPaints(function() {
if (skipping) {
is(utils.checkAndClearPaintedState(elem), false, "Document element didn't get painted");
}
// After that's done, we click on the button to make sure the
// skipped-paint codepath still has working APZ event transformations.
clickButton();
});
}
function clickButton() {
document.addEventListener('click', clicked, false);
synthesizeNativeTap(document.getElementById('b'), 5, 5, function() {
dump("Finished synthesizing tap, waiting for button to be clicked...\n");
});
}
function clicked(e) {
is(e.target, document.getElementById('b'), "Clicked on button, yay! (at " + e.clientX + "," + e.clientY + ")");
subtestDone();
}
waitUntilApzStable().then(startTest);
</script>
</head>
<body style="height: 5000px">
<div style="height: 50px">spacer</div>
<button id="b" style="width: 10px; height: 10px"></button>
</body>
</html>